after many nights of being brainwashed in my dorm by infomercials, i am beginning to question the effectiveness of a product called vmax. it is supposedly a cleaning system that cleans out carbon deposits, and u put it into the oil, transmission, and coolant systems...anybody tried this stuff? i feel shamed even to consider putting that kind of infomercial stuff into my Mercedes engine, but if it does in fact prove beneficial to the car, then why not...thanks for the responses...